Device for applying gluten, coating material, or the like to a supportbase or underlayer



M. VAN AVERMAETE. DEVICE FOR APPLYING GLUTEN, COATING MATERIAL, OR THE LIKE TO A SUPPORT BASE 0R UNDERLAYER.

APPLICATION FILED MAY 8, 1920 Patented Dec. 14, 1920.

stares- PATENT orricu.

MAEIEICE VAN AVERMIAETE, OF THE HAGUE, NETHERLANDS.

DEVICE FOR, APPLYING GLUTEN, COATENG MATERIAL, OR, THE LIKE T A SUPPGET BASE QR UNDERLAYER.

Specification of Letters Eatent. Patented De 14 1955p,

Application filed m 1820. Serial no. 379,973.

To all whom it may concern Be it known that I, MAURICE VAN AVER- MAETE, a subject of the King of Belgium,

- and a resident of The Hague, Netherlands,

have invented a new and useful Device for Applying Gluten, Coating Material, or the like to a Support-Base or Underlayer, of

ing 'wetted.

If paints are applied to a base-layer by means of known devices for instance in applying the base-color to wall papers, the

I detriment exists, that the paint, being kept quiet in the vessel will preci itate, so that the matter which is applie is not uniform as to its quality and it will be necessary to constantly stir the liquid for preventing that the paint applied to the support is too thin, too thick or too irregular.

To avoid these obstacles the improved device according to the invention consists in a supply receptacle for the gluten or the paint which is adjustable in vertical direction whichat its upper face has a narrow slot. Across this slot the support or base-layer to which the matter must be applied is moved and a pump supplies continuously a larger quantity of. liquid to the supply receptacle than would be required for coating, only the superfluous liquid being returned to the supply receptacle by a bypass. In more or less closing the latter the liquid pressure at the outlet- 'slot can be controlled in such manner that ,the liquid is continuously in circulationwhereas same is maintained out of contact with the atmosphereflduringthe operation. Preferably one or more entirely closedtanks are used, in open connection withtlie I lower part of the supply receptacle, and U- shaped tubes are provided, the one end'of which opens into the tanks and 1s slidably stuffed through the upper part of the tank,

while the other end is also in the same way connected with the supply receptacle of the pump, such thatby adjusting the U-shaped tubes higher or lower, the liquid pressure is exactly controlled.

Reference is to be had to the accompany ing drawings forming a part of this specification, in which similar reference characters indicate corresponding parts in all the views.

Figure 1 is a diagrammatical side View, partially a section of an apparatus according to the invention.

Fig. 2 is a front view witha partial section of the flexible supply pipe with the pressure controllers.

Fig. 3 is one of the guide-rollers.

Fig. 4: is a horizontal section of the slideboard to which the knife is attached, controlling the thickness of the layer to be applied.

Fig. 5 is an end view of the'device controlling the position of the knife.

'To the supply receptacle 1, containing the gluten, coating matter or the like is connected a tube 2, which extends with one end sufficiently far into the liquid and which with its other end is connected to a stationary pump 3. This pump is by meansof a flexible tube 4.- coupled to a tube 5, which is attachedtoa tube 6, from which the liquid By .means of this buiferplate the liquid. is caused gradually to spread in lateral di-- rection, by which is obtained that the-liquid leaves the tube 6 without shocks through a slot '8 -in.said tube and is applied I to the underlayer'or support, avoiding the formoainat this outlet opening.

it 5, serving an an airchamber and me time for removing the supervertical slots in the side walls 20 and 20 of the box 20 carrying the other parts of the *mechanism. This tube 5 is attached to the side walls of the box by the aid of quid,-is at both ends in connection pass the connecting pipes 13 and 13.

overflow-tanks 9 and 9 nuts 28, 28 and 29, 29 respectively at the inner and the outer side of the box and screwed on the tubes 21 and 21 This arrangement and the flexible connection with the pump permits a simultaneous adjusting of the tubes 5 and 6 by moving them lower or higher, so that the pressure between the tube 6 and the support or base-layer 23 can be regulated. The ends of the tubes 21 and 21 extending through the side walls are connected to These over-flowtanks 9 and 9 communicate with the vessel or receptacle 1 through U-shaped pipes 13 and 13 tanks 10 and 10 and pipes 22 and 22 The U-shaped connecting pipes 13 and 13 extend to a suitable depth in the overflow-tanks 9 and 9 these tanks being closed, like the tanks 10 and 10 by lids with stufl'ingboxes 11 and 11 throughwhich The superfluous liquid, supplied ,by the pump, flows out of the tube 5 and through the tubes 21, 21 into the overflow-tanks 9, 9 and' may return through the U-shaped pipes 13 and 13 and the tanks 10 and 10 and the connection pipes 22 and 22 to the sup: ply receptacle 1. By this is attained that the liquid "will circulate continuously in a space, which is nearly entirely out of contact with the atmosphere. Further is obtained that by adjusting the pipes 13* and 13 in the direction of the arrows 14 or 15, the pressure, with which the liquid leaves the outlet-slot 8 of the tube 6 with a predetermined and constant speed, is controllable in a suitable manner.'

As the overflow tanks 9, 9 are in open communication with the tubes 5, 6 the liquid in the tubes 13, 13 shall have-the same height as in the supply receptacle 1. The distance "between the slot 8 and the curve of the U- shaped pipes 13---13 determines the counterpressure of. the pump, and therefore the supply-pressure at the slot 8, which distance can be. varied by raising or lowering the pipes 13, 13

The underlayer or support 23, of thin paper or like material, which is to hecovered by gluten, paint, or another matter is guided,

the direction of the arrow 24 by three rollers 16, 17 and 18, against and over the g-slot 8 of the tube 6 and-over a knife 19.

This knife is arranged between the rollers 17 and 18, while the slot is situated between the rollers 16and 17. The rollers have fixe'd' bearings.

As already described, the tubes 5 and 6 are adjustable by the nuts 28,28 and 29,

29 and thereforethe pressure of the support or base-layer 23 against the slot 8 can be regulated. 1

With the knife 19 it is possible to control the thickness of the layer on the support, by changing the incliged position of the knife.

The matter stricken ofl from the support falls on the bottom of the box 20, from which it flows back to the supply receptacle 1 through the pipe 26 and passing the sieve 25.

As appears from Fig. 3.the rollers 16, 17 and 18 bear in pins 32, 32 fixed in the sidewalls 20 and 20- of the box 20. The pin 32 is movably 'held in the wall 20 and is actuated by a spring 37 and a perforated cupshaped piece 36, fixed on the pin 32 which piece is pressed inwardly into a boring of the roller. By drawing back the button 33 against the spring action it is possible to remove the roller for the purpose of cleaning the same.

In order to vary the position of the knife 19, a piece 38 is slidably attached to the side wall 20 of the box, which piece is removable in vertical direction according to the arrows 39 and 40 (Fig. 5).

The angle of inclination of the knife can be changed by means of a handlever 41, movable in the direction of the arrows 42 and 43, while through the pin 41 and the perforations 45 this handlever can be fixed in the predetermined position. The knife is adjustable in vertical direction by an eccentric cam 46 and a handlever 47, the latter guided in a slot 49, while the knife can be fixed in the required Vertical position by a nut 48.

What I claim is:

1. Device for applying a liquid gluten, paint, coverlng matter, or the like to an un- 10o derlayer, a base-layer or support, consisting in a supply-receptacle, a vertically adjustable tube provided at its upper surface with a narrow-slot, across which the, support is moved, a pump continuously supplying anv excess of liquid to the said receptacle and a bypass whereby the superfluous quantity of liquid is returned to the receptacle, by which at-the same time the liquid pressure at the outlet-slot is controllable in such a way that the liquid is entirely out of contact with the atmos here.

2. n apparatus for applying a coat of. liquid gluten or the like to an underlayer, comprising a supply receptacle,a box, a horizontally arranged tube in the box and having a slot in its upper side on which the underlayer bears, a pump to supply an excess of liquid to said tubefrom said supply receptacle, overflow tanks communicating with said tube, U-shaped pipes leading from the overflow tanks, and tanks into which said U- shaped pipes discharge, said last named tanks being in communication with the supply receptacle and discharging thereinto.

3. An apparatus for applying a coat of liquid gluten or the liketo an underlayer, comprising a supply receptacle, a pair of horizontal tubes therein, arranged one above the other and having slots establishing com- 130 municatioii therebetween, the upper ofsaid v In testimony whereof I have signed my tubes having a slot in its upper side and on name to this specification, in presenee of the 10 which the underlayer bears, a. pump to suptwo subscribing Witnesses. ply an excess of liquid to the lower tube from ihesupply'receptacle, andmeans to convey \MAURHJE VAN AVERMAETE' excess liquid from the lower tube and to Witnesses:

return "such excess liquid to the supply r'e- A. C. GEBHARD,

oeptaele.

H. VERHEY. 

